A timestamp (<x id="START_ITALIC_TEXT" ctype="x-i" equiv-text="<i>"/>00:05<x id="CLOSE_ITALIC_TEXT" ctype="x-i" equiv-text="</i>"/> for example) is automatically converted into a link to a part of the video.
A channel is an entity in which you upload your videos. Creating several of them helps you to organize and separate your content.<x id="LINE_BREAK"/> For example, you could decide to have a channel to publish your piano concerts, and another channel in which you publish your videos talking about ecology.